Clamp for concrete-forms.



0.1. EMMGNS.

CLAMP FOR CONCRETE FORMS.

APPLicATloN man MANSl 1917.

Patented Feb. 26, 1918.

2 SHEETS-SHEET l.

0. I. EIIIIVIONS. CLAMP Foa CONCRETE FORMS.

.IJFLIC/ITIOINl FILED .'1IAY25I9|7,

1,257,827. Patented Feb. 26, 15118. I

2 SHEETS-SHEET 2.

wif@

OBBIE J. EMMQNS, F PHILADELPHIA, PENNSYLVANIA.

Tio all whom it may on'cern:

'Be it .known that I, 01mm J. Emmons, a cit'zen'of' the United States, residing at Philadelphia in the county of Philadelphia and State of Pennsylvania, have inventedcertainnezw 'and'. useful Improvements in Clamps for Goncrete-Forms, of which the following is a' specification.

This invention relates to an improved concrete'form clamp and has as its primary object to provide a device of this character which may beused in connection with various. different kinds of .forms for holding "either one or both walls of the form in proper position.

The invention has as a further object to rovi'dea device of this character employ- .ingfcomplemental anchoring members joined l by a. wire cable. and wherein the clamp may beadjust'ed or tightened without likelihood of twisting of the cable or unduly straining thev cable.

.The invention has as a still fu1ther ob]`ect "tof vprov'idel an arrangement wherein the clamping bolts employed may be easilyremoved for' displacing the walls'of the form and wherein, When the said bolts are so rev moved, there will .be no projecting endsI or terminals from'the clamp extending from the faces Of the walls to cause distiguration orl discoloration;

And the inven'on has as a still further object to provide a device of this character employing an anchoring member of improvedtype as well as an improved manner of"connec't'ing the said members by a length of Wireto' form a cable therebetween. "Other and incidental objects will appear astlx'e description proceeds and in the drawings".wherein I have illustrated the preferred 4en'ibodimen t of the .invention and wherein y.similar reference `characters .designate corfresponding parts throughout the several views? l llfigureil .isa vertical sectional view showingf'fa .number of im. improved clamps npl-ied'ylto .a conventional l.type of yconcrete germenl liigvris-fngpl-an view v.of-the .form showing the-manner in' which theclar'np ,is adapted vto ish-old -vthe side vwalls o'f .the forni together,

nF'ig, .'vis an. `end elevation illustratingv the manner :inwliich thecla'm vl may bense'd'in any fiilist'a'nce where the orin 1s provided with one lwall only, this view illustrating' CLAMP FOB CONCRETE-FORMS.

Speoilcation of Letters Patent.

braces 19..

Patented Feb. 26,1918'.

Applicationlled May 25, 1917. Serial No. 170,938.

different types of anchoring members'for the inner terminals of the clamps,

. FigtA is an end elevation illustrating the device used in connection with a foi-m of such construction that by displacing the' preliminary lo being iwisteil to 'form a cable connecting the said members7 and Fig. l5 is a. detail perspective view showing one ot ibe anchoring members detached.

Referring more particularly to the drawings, I have, in Fig. l, illustrated a conventional type of concrete form vhaving Side walls 10, vertical studs 1l, and horizontal.

The present invention comprehcnds a clamp for connecting and holding ihc walls l0 in proper spaced relation with the clamp Jadjustable for positioning the walls toward each other so as to compensate for any shrinkage inv the concrete after being poured. ln carryin(lr out the invention, I employ, as particularly. shown in Fig. 5, colnplemental. anchoring i'neinbers 13 each having a cylindrical body 14, from the inner extremity of which extend oppositely disposed radial lugs or hooks l5. Connecting the anchoring members are wires 16 and 17 respectively. The wire 1G' is first passed back and toi-th between the anchoring members and vis vlooped around the bodies 14: thereof with the strands'of the wire between the said .members extending over corresponding sides ofthe hooks 15 thereof. The` extrenntles of the wire are. then passed between and bent aronndthe said strands as direction o posits to the loops of the wire 16. sothat t estrands of the wire 1T between the said members extend from the loops of the latter lvire over corresponding sides of the hooks 1.5 opposite to the vsides thereof engaged b the strands of the Wire-16, the f.

strands o strands of the Wire 16 within the said hooks.

the wire -17 crossing'. over the The free ends of the wire 17 are finally passed between and looped around the strands of the said Wire as indicated at 19. With the wires 16 and 17 thus initially posilength that the said anchoring members areV disposed adjacent to the sald walls. In-

Fig. "1, I have illustrated a transverse clamp disposed adjacent the bottom of the form, a

^ second transverse clamp disposed adjacent the top of the form and a pair of diagonally arranged clamps crossing each other. Fig. 2 more particularly shows the spacing of the transverse clamps longitudinally of the form. In connection with each pair of the anchoring members 13, I employ double ended clampin bolts or elements 21. These bolts are passe freely through the braces 12 as well as through the walls 10 Vand are screw threaded at their inner extremities to engagethrough the bodies 14 of the said .anchoring members. Thebolts 21 ofeach clamp are., of course, arranged in aline-ment and at their outer` extremities are equipped' `with nuts 22. In connection with the bolts of the diagonal clamps, beveled Washers 23 are employed to come between the nuts o .the said bolts and the braces' 12.

i As `will nw be readily understooohthe bolts 21 may'be.adjusted..v within the anchoring `members and the nuts 22 also adjusted .upon the bolts for clamping the Walls 10 of v theform together and supporting thesaid walls in proper spaced relation. Before the o concrete is oured in, spreaders 24 are pref-v erably emp oyed between the-walls and these --s readers are-removed. as the concrete reaches lsoA ist e .level thereof. Since the bolts 21 may be' rotated independently of the anchoring members, turning of 4these bolts or adjustment of the, nuts 22 cannot twist the cables 20. Consequently, adj ustment. of the clamps will not act to twist off the cables and since thev cables are eachj'forrned ofV a plurality of strands Wra pcd together, the saidV cables will have su 'cient strength. tovwithstand any iordinary tension upon the bolts 21. -Also it is particularly noted that the bolts 21. are

'adjustable clear through the anchoring mem bers so that the said anchorl'n' members may.`

4 be` adjusted the entire lengt.; 'of the inner.

' threaded portions of thebolts without be-j coming fixed to the bolts to rotate therewith.

This arrangement further guards against the possibiliity of twisting oil' the cables 20. Immediately at the inner, sldesfof the anchoring members 13, the strands' of the wires 16 and 17 are strai ht and converge from 'the hooks of the sai anchoring members t0 the the cables 20 to, in eilect, form cages 25' for the inner terminals of the bolts 21. The

' outer. terminals of the twisted portions ofl inner terminals of theds'id bolts may be projected into these cages a considerable distance without coming in contact 4with the wires so'that the threads upon thefbolts will not, under ordinary.circumstances,` become 'l mutilated, while, at the samev time, the said cages will holdthe concrete away from-the inner terminals of'f the bolts.' Y

After the concrete is set within the form-,

eoy

the bolts 21 are removed Vwhen the entire j form may be displaced. The openings formed in the faces of the concrete bythe said bolts may then be sealed when the concrete Wall or other structurel will be complete.` Sealing of these openings may be easily accom lished,

and in this connection, it is t0 be 0 served that after the bolts 2l are removed, there will be no projecting ends from the' clamps extending from. the side faces of the concrete structure .th as would Vcause disf uration or discoloration. Consequently, a ter the bolt openings have been' concealed, the faces of the concrete structure will have a smooth and finished surface.

It will therefore be seen that I'provide a purpose set forth.4 Any desired number of the clamps may, ofcourse, be usedfupon one form and theseclamps may, asillustrated in Figs. 1 andV 2, be arrangedto extend be'- tween the walls of the' form, as preferred, to

' effect the bracing thereof. However, in Fig.

3,. I have illustrated the useof the clamp in connection with a form having only one wall. In this ligure, the wall of the 'form is conventionallyshown ath26 and supporting the said wall are thevel'tical studs Extending longitudinally. with respect the studs are the vertically spaced braces 285 Any suitable number `of clamps may be employed and in the .drawingsl have illustrated the use of three ofthe clamps. The

anchoring members at the r inner ...terz'iinals of the clamps are removed land tht. inner ends of the cables 20 secured to" anchoring members embedded within the concrete. At

29"'I have shown the use of an' S-shapedA `,anchoring member. 30, an VVanchorin member 1s employed having 'oppositely d1- particularly eilicient construction for the 2g).- iio Y rect-,ed lugs at the top thereof f'for engage..

trated the use of a bent rodas ananchoring .member-i Accordingly, it lWill-.be lseen .that the anchoring members at theinner extremities of thc cablesmay, when the clamp is used with a form having but a singleilwall,

.ment with the cableonnectedto the said` ..anchoringmember, while aft 311 have illus- Aso be varied'i'n character and may be of any suitable type.

the outer ends of the cables are positioned adjacent the Wall 26 and the clamping bolts 2l are projected freely through the Said wall as well as through the longitudinal braces 28 for engagement therewith with the nuts 22 of the saidJ bolts engaged with the braces. When the concrete is set, the bolts yare displaced when the form may bey removed and the holes made in 'the concrete by the said bolts sealed'as previously described;

In Fig. 4 of the drawings, I have illustrated the use of my improved clamp in connection with a conventional type of form having the walls thereof constructed in sections or panels. In this ligure; the walls of the form are indicated at 33. Supporting the said walls are vertical studs 34 held by horizontal braces 35. Any suitable number of the clamps may be arranged to extend Vbetween the braces 35 in themanner pre'- viously described, After the concrete has partly set, one or more panels of eitherof the Valls 33 may be removed, as illustrated at 36, by displacing the bolts 21 engaging through the said panel or panels. The po'rtion of the face of the concrete Wall or other structure thus exposed' may be scrubbed,v or otherwise treated while the remaining portion of the wall will be heldintact by the form. After being so treated, the panels taken out may be replaced, the bolts 21 removed again fitted in position and other panels of the Walls 33 taken o ut for treating an additional portion of the fac'e of the wall. My .improved clamp thus provides a IThe anchoring members at an anchoring member provided with oppodirected lugs, a flexible element havlng sitel over apping strands thereof looped over the said lugsA around the said member, a second flexible element having overlapping strands Having thus described my invention, whatv thereof looped around the said member and over thesaid lugs in' a direction opposite to i the strands of said irst-mentioned element with the several strands crossing Within the said lugs and thence twisted together to form a securing cable, and a clamping element djustable through the said anchoring mem-v 2.- A clamp for concrete forms includin y an anchoring member having oppositely d1- rected lugs extending from the inner extremity thereof, flexible elements looped around the body of the ,said-member andextending at Iopposite sides of said lugs to provide a securing cable, and a clamping element adjustablengaging the anchoring member and detac ably connected therewith. i

In testimony whereof I aiiix my signature. I

oRRIE J. EMMoNs. [i.. el] 

